IBM Support

PH67930: USING ZOWE HIGH-AVAILABILITY MODE, UMS MAY INCORRECTLY ATTEMPT TO CONTACT ZOWE SERVICES THROUGH IP ADDRESS INSTEAD OF HOSTNAME

A fix is available

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APAR status

  • Closed as program error.

Error description

  • In Zowe high-availability mode with a certificate-based DBA
    user, UMS must contact Zowe to get a specification of the Zowe
    ZSS server. UMS used the IP address returned, and this may cause
    failures if the server certificate for ZSS does not contain the
    IP address in the subject alternative name. With this fix, UMS
    will verify connectivity and use whichever of IP addresses and
    hostname is successful.
    
    Affected users: Users of the Unified Management Server for z/OS
    with certificate-based DBA users using the Zowe
    high-availability functionality
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Users of the IBM Unified Management Server   *
    *                 for z/OS                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: In Zowe high-availability mode, UMS     *
    *                      might incorrectly attempt to contact    *
    *                      Zowe services through IP address        *
    *                      instead of hostname.                    *
    ****************************************************************
    In Zowe high-availability mode with a certificate-based DBA
    user, UMS must contact Zowe to get a specification of the Zowe
    ZSS server. UMS uses the IP address returned, and this may cause
    failures if the server certificate for ZSS does not contain the
    IP address in the subject alternative name. With this fix, UMS
    will verify connectivity and use whichever of IP addresses and
    hostname is successful.
    

Problem conclusion

  • Apply the PTF
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH67930

  • Reported component name

    UNIFIED MGMT SV

  • Reported component ID

    5698UM100

  • Reported release

    120

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2025-08-28

  • Closed date

    2025-12-12

  • Last modified date

    2026-01-02

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Modules/Macros

  • IZPB0001 IZPDAJ   IZPDB2SD IZPDPROV IZPHLOSD IZPHLVSD IZPIFI
    IZPIMSSD IZPIVP   IZPJOBMT IZPMNFST IZPPAUX  IZPSEC   IZPSERVE
    IZPSYSSD IZPUI    LRVTUPD  UMSSEC
    

Fix information

  • Fixed component name

    UNIFIED MGMT SV

  • Fixed component ID

    5698UM100

Applicable component levels

  • R120 PSY UO06219

       UP25/12/19 P F512

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG19M"},"Platform":[{"code":"PF054","label":"z Systems"}],"Version":"120"}]

Document Information

Modified date:
02 January 2026